> You're promoting the false narrative that if someone does better in life it is just chance and nothing

That's a straw-man, I didn't say it's "just" chance and it's called a fallacy, not a narrative, and it's a fact, not false. It's a cognitive bias all humans have to attribute their success to their own efforts, and that's what's false.

Reality is somewhere between the two positions being argued.

Reality is those biases exist, and chance plays a far greater role in everyone's lives than most like to admit; that's a fact. The just world fallacy is a fact. Survivorship bias is a fact. These are not debatable points, they're truths and they're true regardless of opinions to the contrary.